Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cca5b4761c639493cf84651bd233f75607908505242b6df35cc0e31a775c88ce' 
  AND token = 'Wu+LWBm/oBzfFilP0nyJFgRP9XTp6di0gnWtFwYzt+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}